Chu Ding Tech
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| Brand | Chu Ding Tech |
|---|---|
| Origin | Shanghai, China |
| Model | 722N |
| Wavelength Range | 320–1020 nm |
| Wavelength Accuracy | ±2 nm |
| Wavelength Repeatability | ≤1 nm |
| Spectral Bandwidth | 4 nm |
| Photometric Accuracy | ±0.5% T |
| Transmittance Range | 0–100% T |
| Absorbance Range | −0.097 to 1.99 A |
| Concentration Range | 0–1999 C (or F) |
| Stray Light | ≤0.3% T at 340 nm |
| Baseline Stability | ≤0.004 A/h at 500 nm (after 1 h warm-up) |
| Optical Path Length | 100 mm |
| Light Source | 6 V, 10 W imported tungsten lamp |
| Display | 4-digit LCD |
| Data Interface | RS-232C standard port |
| Power Supply | 220 V / 110 V AC, 50–60 Hz |
| Net Weight | 12 kg |
| Brand | Chu Ding Tech |
|---|---|
| Origin | Shanghai, China |
| Model | 7230G |
| Optical System | Single-beam |
| Detector | Photodiode Array |
| Wavelength Range | 320–1100 nm |
| Wavelength Accuracy | ±0.5 nm |
| Spectral Bandwidth | 2 nm |
| Stray Light | ≤0.05% T @ 360 nm |
| Wavelength Repeatability | 0.2 nm |
| Photometric Accuracy | ±0.3% T |
| Photometric Repeatability | ±0.2% T |
| Baseline Linearity | ≤0.2% T |
| Drift | ≤0.001 A/h @ 500 nm |
| Noise | ≤0.1% T |
| Photometric Range | 0–200% T, −0.301–3.000 A |
| Light Source | Imported Tungsten Lamp |
| Weight | 12 kg |
| Interface | RS-232 (optional), USB, Parallel Port |